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Assertion: SPI needs no error checking in the protocol. Reason: the clock is supplied by the master with the data.

  • A.both the assertion and the reason are true and the reason explains the assertion
  • B.the assertion is true but the reason given for it is false
  • C.the assertion is false although the reason offered is a true statement in itself
  • D.both the assertion and the reason are true but the reason does not explain the assertion

Answer: D

SPI genuinely has no error detection, and the clock is indeed supplied with the data, but the second fact does not make errors impossible: a noisy or overlong link corrupts data whatever carries the clock. Any checking has to be added by the application.

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